Fastening-inserting machine



53k E94. E, C, GILL 2,408,845

FAS'TENING-INSERTING MACHINE original Filed peo. 12, 1942 mmm] mhigf 1. m

I /NVE/VTUR .M l I l 'lf Patented Oct. 8, 1946 FASTENING-INSERTING MACHINE Emerson C. Gill, Melrose, Mass., assgnor to United Shoe Machinery Corporation, Flemington, N. J., a corporation of New Jersey Original application December 12, 1942, Serial No. 468,774. Divided and thisfapplication July 12, 1944, Serial No. 544,495

6 Claims.

This invention relates to machines by which fastenings are driven to effect the connection of work-pieces. Machines of this character may be employed for the attachment to shoes of heelparts,v as bases and lifts of rubber or the like. The present case is a division of an application filed in my name in the United States Patent Oflice Aon December l2, 1942, and bearing the Serial No. 468,774.

A second divisional application directed to the means which insures the matching and registration of the elements of the fastening-inserting mechanism was led in my name on July 12, 1944, with the Serial No. 544,494, it'having matured on May 29, 1945, into Patent No. 2,376,910.

An object of the invention, and in connection with a fastening-inserting die or other workabutment in a heel-attaching machine, such abutment being provided with a projection or projections against which the work is pressed, is to avoid interference by engagement with the projections upon the introduction of the heelparts into attaching position. This result is gained by combining with the abutment a yieldable guard having one or more openings within which the projection or projections normally lie, said guard presenting a plane surface to the heelparts. This guard may be furnished by a plate guided for movement upon the die and forced by springs into its normal position, in which the projections or quills are shrouded. The plate yields when :clamping pressure is applied, so the quillends will project outside the plate-openings for engagement with the heel-part, to enter, for example, the material surrounding the nail-passages in a rubber or other compressible lift.

In the accompanying drawing:

Fig. 1 shows, in front elevation with elements in section, portions of a heel-attaching machine with which the present invention is more directly concerned;

Fig. 2 is an enlarged transverse sectional detail through the lift-engaging elements, taken prior to the clamping of the work; and

Fig. 3 is a View similar to Fig. 2, but with the Work under pressure.

The general organization of a heel-attaching machine to which the present invention is applicable may be that disclosed in Letters Patent of the United States No. 2,293,624, Parkhurst, August 18, 1942*, and in certain respects in No. 2,207,742, La Chapelle, July 16, 1940, these machines being designed for the attachment of heelbases and top-lifts to shoes. In apparatus of this character, there is mounted upon a frame tacts is provided by a plate i8, of which depending quills 24 are a part. These quills may be formed integrally With the plate or made separately and xedly attached thereto. The plate with its projections is carried in ways 20 at the underside of the die and latched in place by a spring-plunger 22, movable through said die and entering an opening at the front of the plate.

The passages through the plate, corresponding to those of a particular nailing design in the die, terminate in the quills 24. 'I'he quills enter the surface of a rubber or other elastic lift T to be attached, and compress the material over the area therein through which the attaching fastenings are to be driven. 'Ihese fastenings pass through this lift and a heel-base, carried at the underside of the die-quill-plate by holding mechanism M, and into the heel-seat of a shoe which is pressed against the base by a vertically reciprocable jack (not illustrated) upon which it is supported. The fastenings are preferably cut from strings of liber and delivered by a loader-block 30 to the dieblock-passages I4. The insertion of the fastenings in the Work is effected by a gang of reciprocatory drivers 34, which may rst act as awls, as in the previously mentioned La Chapelle patent. The driver-assembly operates in the corresponding group of multiple die-passages I4, it being changed, together with the quill-plate I8, as the inserting design varies.

Were it necessary to insert the lifts into the holder M in contact with the ends of the spaced quills 24, there would tend to be interference with the movement. To prevent this, the lower portions of the quills are shrouded by a guard-plate |08. underside of the quill-plate I8, it being held against downward displacement by the heads of screws 102, which extend through openings in the quill-plate and are threaded vertically into the guard-plate. In the guard-plate is a contracted opening 1M for the reception of each quill with relatively small clearance, the lower end of each quill lying normally above the lower surface of the plate (Fig. 2). In its lowered position, the guard-plate is yieldably maintained by expansion-springs |66 having their opposite extremities seated in recesses in the quill-plate This plate is movable in a recess at the.

and guard-plate. The underface of the guardplate presents an extended surface free from interfering projections when the toplifts are slid into place in the holder M. Yet, when clamping pressure goes upon the work (Fig. 3), as a result of the elevation of the shoe-supporting jack in preparation for the insertion of the fastenings by the drivers 34, the guard-plate yields freely, so the quills lie outside the plate-openings and enter the substance of a rubber lift.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

l. In a heel-attaching machine, a heel-abutment provided with a projection againstv which the work is pressed, and a yieldable guard having a, contracted opening Within which the projection normally lies, said guard presenting to heel-ports about the opening an extended plane surface-for engagement with the tread-surfaces of said heel-parts during their introduction into the machine.

2. The combination with afastening-inserting die provided with projections against which the work is pressed, of a guard-plate yieldable upon the die by contact with the work and having openings within which the projections normally lie.

3. The combination with a fastening-inserting die including a quill-plate provided with a recess, of a guard-plate guided for movement; in the recess and having openings in which the quills lie with their ends normally Within the openings, and springs interposed between the quill-plate and the guard-plate and permitting yield of said guard-plate so the quill-ends may project outside the openings.

4. In a heel-attaching machine provided with reciprocatory drivers, the combination with a fastening-inserting die provided with openings and projections from its lower face through which the openings are continued and through which the drivers reciprocate, of a guard-plate yieldable upon the die under the inluence of a heel to be attached and having an opening individual to each projection and in which said projection normally lies shrouded by the plate.

5. In a heel-attaching machine provided with reciprocatory drivers, the combination with a fastening-inserting die provided with openings and projections from its lower face through which the openings are continued and through which the drivers reciprocate, of a holder for a heel to be attached associated with the die, and a guardplate yieldable upon the die under the influence of. a heel to be attached and having openings into which the projections extend, said guard-plate presenting a surface along which a heel may be slid into the holder without interference by the projections.

6. In a heel-attaching machine, the combination of a heel-abutment provided with a projection against which the work is pressed, of a yieldable guard having an opening Within which the projection normally lies, said guard presenting a plane surface for engagement with heel-parts, and a holder situated below the abutment and into which the heel-part may be slid guided bythe plane surface of the guard.

EMERSON C. GILL. 

